Correlation Co-efficient is _______ of the units of measurements(a) Independent(b) Dependent(c) Both(d) none of these

The co-relation co-efficient of two random variable is defined as

Which of the following correlation coefficients represents no correlation between two variables?

Which of the following are measured by correlation coefficienta.Linear association between two random variablesb.Direction of relationship between two variables (positive or negative association)c.A unit free value for the strength of linear relationship between two random variablesd.All of the above

.Correlation is the relationship between_____variablesA)OneB)TwoC)ThreeD)Four

Q.1. Define correlation.